The recovery of acidic lakes in the northeastern United States and eastern Canada is largely the result of
A) the buffering effects of the granite rock in these regions.
B) the widespread addition of limestone to the lakes in these regions.
C) the elimination of lead from gasoline sold in North America.
D) reductions in sulfur dioxide and nitrogen oxide pollution.
D
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In examining POTET (potential evapotranspiration) values throughout the year for New Orleans and comparing them to PRECIP (precipitation) received, is there an annual moisture surplus or deficit?
New Orleans—Station # 4
What will be an ideal response?
The development of similar characteristics in separate but closely related organisms is called
____________. Fill in the blank(s) with the appropriate word(s).
The surface air around a strengthening low pressure area normally __________, while aloft,
above the system, the air normally __________. a. diverges, diverges b. diverges, converges c. converges, converges d. converges, diverges
A probability forecast that calls for a "40 percent chance of rain" means that?
a. ?there is a 40 percent chance that it will not rain within the forecast area. b. ?there is a 40 percent chance that any random place in the forecast area will receive measurable rain. c. ?it will rain on 40 percent of the forecast area. d. ?it will rain during 40 percent of the time over the forecast area. e. ?it will definitely rain.